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Post-Processing Techniques for the Improvement of Liposome Stability.

Ji Young Yu1, Piyanan Chuesiang2, Gye Hwa Shin2

  • 1Department of Biotechnology, College of Life Science and Biotechnology, Korea University, Anam-dong, Seongbuk-gu, Seoul 02841, Korea.

Pharmaceutics
|August 10, 2021
PubMed
Summary

Post-processing techniques like freeze drying and spray drying enhance liposome stability for improved drug delivery. These methods create dry liposome particles, overcoming issues seen with aqueous formulations.

Keywords:
freeze dryingliposome stabilitypost-processing techniquesspray dryingspray freeze drying

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Area of Science:

  • Pharmaceutical Sciences
  • Materials Science

Background:

  • Liposomes are crucial drug delivery systems for enhancing bioavailability and controlling drug release.
  • Aqueous liposomes are prone to instability issues like aggregation and precipitation, compromising their structure and efficacy.

Purpose of the Study:

  • To review post-processing techniques for creating stable dry liposomes.
  • To evaluate the impact of freeze drying, spray drying, and spray freeze drying on liposome stability and properties.
  • To discuss parameters influencing liposome characteristics during drying and the role of protective agents.

Main Methods:

  • Literature review of studies on liposome drying techniques.
  • Analysis of freeze drying, spray drying, and spray freeze drying methods.
  • Examination of factors affecting liposome stability and drug encapsulation efficiency.

Main Results:

  • Dry liposome particles exhibit enhanced stability and accessibility compared to aqueous liposomes.
  • Drying techniques significantly influence liposome physicochemical properties and drug encapsulation efficiency.
  • Protective agents can mitigate limitations associated with different drying processes.

Conclusions:

  • Post-processing techniques are vital for stabilizing liposomes and improving their drug delivery potential.
  • Understanding drying parameters and protective agent effects is key to optimizing dry liposome formulations.
  • Dry liposomes offer a promising alternative for advanced drug administration strategies.